EP 1605284 A1 20051214 - WAVELENGTH FILTER AND WAVELENGTH MONITOR DEVICE
Title (en)
WAVELENGTH FILTER AND WAVELENGTH MONITOR DEVICE
Title (de)
WELLENLÄNGENFILTER UND WELLENLÄNGENÜBERWACHUNGSVORRICHTUNG
Title (fr)
FILTRE DE LONGUEUR D'ONDES ET DISPOSITIF DE CONTROLE DE LONGUEUR D'ONDES
Publication
Application
Priority
JP 0303345 W 20030319
Abstract (en)
[origin: WO2004083914A1] A wavelength filter comprising a light-transmitting solid material, and a holding material that holds the solid material at opposing planes formed on the solid material almost in parallel to each other and at planes other than the above opposing planes by means of a joining agent, and is higher in rigidity than the solid material, light being resonated between the opposing planes almost in parallel to each other, a wavelength to be determined by a light path length between the opposing planes being selected periodically, characterized in that the solid material is a double-refraction material, and its optical axis forms a specified angle with a normal to the opposing planes almost in parallel to each other. Accordingly, stable wavelength discriminating characteristics can be obtained even when the solid material is being held by the holding material.
IPC 1-7
IPC 8 full level
G01J 3/26 (2006.01); G01J 9/02 (2006.01); G02B 5/28 (2006.01); G02B 5/30 (2006.01); G02B 7/00 (2006.01); H01S 5/0687 (2006.01)
CPC (source: EP US)
G01J 9/02 (2013.01 - EP US); G02B 5/3083 (2013.01 - EP US); G02B 7/008 (2013.01 - EP US); G01J 2009/0257 (2013.01 - EP US); H01S 5/02325 (2021.01 - EP US); H01S 5/0687 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1605284 A1 20051214; EP 1605284 A4 20110309; EP 1605284 B1 20121226; CN 1759331 A 20060412; CN 1759331 B 20100512; JP 4322812 B2 20090902; JP WO2004083914 A1 20060622; US 2006256437 A1 20061116; US 7283302 B2 20071016; WO 2004083914 A1 20040930
DOCDB simple family (application)
EP 03712765 A 20030319; CN 03826163 A 20030319; JP 0303345 W 20030319; JP 2004569579 A 20030319; US 54932505 A 20050916